Packing machinery



1933- w. E. MOLINS ET AL PACKING MACHINERY Filed March 1'7, 1932 INVENTOR Patented A g- 3 a 1,924,045

ts!) srA TEs PATENT o FicE.

1,924,045 PACKING MACHINERY Walter Everett Molins and John Walker Chalmers, Deptford, London, England Application March 17, 1932, Serial No. 599,582, I

and in Great Britain. March 18, 1931 7 Claims. (c1. 93 2 V This invention relates to packet inakingmaconnected with the stacker side Should the V chines and refers more particularly to the heated machine stop, each wall may be moved about its boxes or stackers used on such machines for the pivot so that it is away from the packets within purpose of drying the'gum which is applied to the the stacker.

. folds of the packets. Each of the movable stacker walls is provided. 60

It is customary to feed freshly made packets with a spring 13, the other endofwhich is fixed step by step through such stackers by pressure to the frame and tends to pull the wall away from V exerted on the rear or lowermost packet, and in the packets. order to prevent the packets from being crushed When the cam 11 is twisted .by means of the in the process, it is usual to move one or more handle :12 the roller 6 becomes loose on its pivot 65 sides of the box away from the packets whilst and the stacker side is then free to move and the latter are being moved. moves outwards under the'tension of the spring This practice has the disadvantage that the 13. The parts then assume the positionshown in gummed flaps of the packets tend to open as the Fig.3. The packets are, however, still firmly 15 lateral pressure is released and become slightly held by the thin ribs-5 so that the flaps in the. 70. displaced, and further, the heat causes the gum packets cannot become displaced. to crystallize in the open seams, thus producing =The cams llmay, of course, be operated autounsatisfactory packets. matically by linkwork connected to the striking The invention comprises a stacker for use 0 gear of the machine. As the packets only rub on packing machines in which some or all of the a few thin ribs during movement, there is no 75 walls are movable and having means for keeping tendency for the packets to jam, whilst at the the flaps of the packets under constant control. same time the folds cannot open and become The invention will be more particularly dedisplaced.

V scribed with reference to the accompanying draw- Although the invention has been described with ing, in which: I reference to a stacker having two=movable walls, 80

Fig. 1 is an elevation of an apparatus conit may obviously have as many movable walls as structed according to the invention. 'may be necessary according to the number of Fig. 2 is an elevation of Fig. Lin the direction gummed seams on the packets being made. of the arrow A. V v M What we claim as our'invention and desire to Fig. 3 is a fragmentary view similar to Fig. 1 secure by Letters Patent is: 85

with the parts disposedin a different position. 1. In packing machines employing containers Referring to the drawing, two of the sides 1 of the type having one side thereof provided with which form the walls of the stacker and which gummed flaps, the combination with a stacker are heated for the purpose of drying the gum, having at least one wall thereof supported for are pivoted at 2 to brackets 3 which are fixed to movement away from and toward the containers the bed of the machine 4. The brackets 3 also v accommodated therein and normally engaging carry immovable guides comprising a series of and retaining the gummed flaps in position, of thin ribs 5 which are fixed thereto and extend separate means associated with the stacker and the whole length of the stacker, the walls 1 being extending into close proximity to the said side of 0 slotted to accommodate the said ribs. the containers for engaging and retaining the Each of the movable stacker walls 1 has a cam container flaps in position on movement of the roller 6 fixed thereto which engages with a cam said movable stacker wall away from the con- 7 so that the walls are oscillated about the pivot tainers. V 2 eachtime the cam '7 revolves, the packet flaps 2. In packing machines employing containers being retained meanwhile by the fixed ribs 5. of the type having sides provided with gummed The remaining walls 1 of the stacker, in the flaps, the combination with a stacker having at present instance, are fixed. v least one wall thereof supported for movement The packets'8 are thrust up into the stacker away fromrand toward the containers accom by a reciprocating platform 9 and spring pressed modated therein and normally engaging the catches 10 are provided to support the stack of gummed flaps, of means for feeding containers packets, the catches opening as each fresh packet into the stacker, means associated with the stackis thrust upwardly into the stacker. 7 er extending into close proximity to the aforesaid The cam roller 6 is held in its working position sides of the containers for engaging and retainby a hand operated cam 11 in the manner shown ing the container flaps in position on movement 55 in Fig. 1, in which position the roller 6 is rigidly of the said movable stacker wall away from the containers, and means operable in timed relation with said feeding means for moving the said movable stacker wall away from the containers during the feeding operation.

3. Inpacking machines employing containers of the type having opposed sides provided with gummed' flaps, the combination with a stacker having opposed walls thereof supported for movement away from and toward the containers accommodated therein and normally engaging the gummed flaps, of means for feeding containers into the stacker, means for supplying heat to the said movable stacker walls, and means associated with the stacker and extending into close proximity to the aforesaid sides of the containers for engaging and retaining the container flaps in position on movement of the said movable stacker walls away from the containers.

4. In packing machines employing containers of the type provided with gummed fiapathe combination with a stacker having at least one wall thereof supported for movement away from and toward the containers accommodated therein, of stationary means extending within and longitudinally of said stacker having a container engaging face of relatively small width measured transversely of the stacker, said face being located substantially in the plane of the movable wall of the stacker, whereby on movement of the latter away from the containers, the gummed container flaps-are maintained against displacement.

5. In packing machines employing containers of the type provided with gummed flaps, the combination with a stacker having at least one wall thereof supported for movement away from and toward the containers accommodated therein, of stationary means extending within and longitudinally of said stacker having a container engaging face of relatively small widthvmeasured transversely of the stacker, said face being located substantially in the plane of the movable wall of the stacker; whereby on movement of the latter away from the containers, the gummed container flaps are maintained against displacement, means for feeding containers, one at a time, into the stacker, and means operable in timed relation with said last named means for moving the said movable wall of the stacker away from the containers during the feeding operation.

6; In packing machines employing containers of the type provided with gnmrned flaps, the'combination with a stacker having at least one wall thereof supported for movement away from and bination, with a stacker having at least one wall,

thereof supported for movement away from and toward the containers accommodated: therein, said wall provided with a longitudinally extending recess in the inner face thereof, stationary means positioned in said recess for engaging the flaps of the containers when "said movable Wallis displaced away from said containers, and means for supplying heat to the said movable wall. i V

WALTER EVERETT MOLINS. JOHN WALKER CHALMERS. 

